English Dictionary

primary source

noun

(scholarly studies) An original work, especially one by a notable author whose work is now the subject of commentaries (secondary sources).

The historian consulted a primary source to gather information for his research.

意味（1）

(scholarly studies) An original work, especially one by a notable author whose work is now the subject of commentaries (secondary sources).

意味（2）

(historiography) A historical object, especially a written document, that was created at or near the time of the events studied.